Biol. Bull. Sign up for etocs!
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text (PDF) Free
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Pullen, J.
Right arrow Articles by Labarbera, M.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Pullen, J.
Right arrow Articles by Labarbera, M.

The Biological Bulletin, Vol 181, Issue 3 442-452, Copyright © 1991 by Marine Biological Laboratory

GENERAL BIOLOGY

Modes of Feeding in Aggregations of Barnacles and the Shape of Aggregations

J. Pullen and M. Labarbera
Macalester College, 1600 Grand Avenue, St. Paul, Minnesota 55105

The interactions between the form of a barnacle aggregation, its flow environment, and the feeding behavior of each individual was determined in unidirectional flows; both models of barnacle aggregations and live barnacles were used. Hill-shaped aggregations of model barnacles captured significantly more particles than flat aggregations. In general, rows upstream of, and at the peak of, all hill-shaped profiles captured significantly more particles than downstream rows. Living barnacles located at, or upstream of, the peak of natural clusters captured significantly more food particles than did barnacles located downstream. Living barnacles located at, or upstream of, the highest point in a natural cluster fed passively, whereas barnacles downstream of the peak actively swept their cirral net against the flow. Flow was laminar up to the highest point in natural clusters, whereas flow was both reduced and turbulent over the downstream portions. Individual barnacles within a cluster differ in their feeding rates and net energy gains, and therefore differ in their growth such that, in unidirectional flow, the peak of a cluster will shift upstream over time; in oscillating flows, the clusters will develop a symmetrical profile.


This article has been cited by other articles:


Home page
 Biol. Bull.Home page
M. C. Pratt
Effect of Zooid Spacing on Bryozoan Feeding Success: Is Competition or Facilitation More Important?
Biol. Bull., August 1, 2004; 207(1): 17 - 27.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1991 by the Marine Biological Laboratory.